2 This file is part of GNUnet.
3 (C) 2012 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 #include <gnunet_util_lib.h>
23 #include <gnunet_gns_service.h>
24 #include <microhttpd.h>
25 #include <curl/curl.h>
27 #include "gns_proxy_proto.h"
31 #include <gnutls/gnutls.h>
32 #include <gnutls/x509.h>
33 #include <gnutls/abstract.h>
34 #include <gnutls/crypto.h>
37 #define GNUNET_GNS_PROXY_PORT 7777
38 #define MHD_MAX_CONNECTIONS 300
40 /* MHD/cURL defines */
41 #define BUF_WAIT_FOR_CURL 0
42 #define BUF_WAIT_FOR_MHD 1
43 #define HTML_HDR_CONTENT "Content-Type: text/html"
46 //#define RE_DOTPLUS "<a href=\"http://(([A-Za-z]+[.])+)([+])"
47 #define RE_A_HREF "href=\"https?://(([A-Za-z0-9]+[.])+)([+]|[a-z]+)"
48 #define RE_N_MATCHES 4
50 /* The usual suspects */
52 #define HTTPS_PORT 443
56 * A structure for CA cert/key
61 gnutls_x509_crt_t cert;
64 gnutls_x509_privkey_t key;
69 * Structure for GNS certificates
71 struct ProxyGNSCertificate
73 /* The certificate as PEM */
76 /* The private key as PEM */
82 * A structure for socks requests
86 /* The client socket */
87 struct GNUNET_NETWORK_Handle *sock;
89 /* The server socket */
90 struct GNUNET_NETWORK_Handle *remote_sock;
95 /* Client socket read task */
96 GNUNET_SCHEDULER_TaskIdentifier rtask;
98 /* Server socket read task */
99 GNUNET_SCHEDULER_TaskIdentifier fwdrtask;
101 /* Client socket write task */
102 GNUNET_SCHEDULER_TaskIdentifier wtask;
104 /* Server socket write task */
105 GNUNET_SCHEDULER_TaskIdentifier fwdwtask;
113 /* Length of data in read buffer */
114 unsigned int rbuf_len;
116 /* Length of data in write buffer */
117 unsigned int wbuf_len;
119 /* This handle is scheduled for cleanup? */
122 /* Shall we close the client socket on cleanup? */
127 * DLL for Network Handles
129 struct NetworkHandleList
132 struct NetworkHandleList *next;
135 struct NetworkHandleList *prev;
138 struct GNUNET_NETWORK_Handle *h;
142 * A structure for all running Httpds
147 struct MhdHttpList *prev;
150 struct MhdHttpList *next;
152 /* is this an ssl daemon? */
155 /* the domain name to server (only important for SSL) */
158 /* The daemon handle */
159 struct MHD_Daemon *daemon;
161 /* Optional proxy certificate used */
162 struct ProxyGNSCertificate *proxy_cert;
165 GNUNET_SCHEDULER_TaskIdentifier httpd_task;
167 /* Handles associated with this daemon */
168 struct NetworkHandleList *socket_handles_head;
170 /* Handles associated with this daemon */
171 struct NetworkHandleList *socket_handles_tail;
175 * A structure for MHD<->cURL streams
180 struct ProxyCurlTask *prev;
183 struct ProxyCurlTask *next;
188 /* Optional header replacements for curl (LEHO) */
189 struct curl_slist *headers;
191 /* Optional resolver replacements for curl (LEHO) */
192 struct curl_slist *resolver;
194 /* curl response code */
195 long curl_response_code;
197 /* The URL to fetch */
200 /* The cURL write buffer / MHD read buffer */
201 char buffer[CURL_MAX_WRITE_SIZE];
203 /* The pointer to the data in the buffer */
206 /* The buffer status (BUF_WAIT_FOR_CURL or BUF_WAIT_FOR_MHD) */
209 /* Number of bytes in buffer */
210 unsigned int bytes_in_buffer;
212 /* Indicates wheather the download is in progress */
213 int download_in_progress;
215 /* Indicates wheather the download was successful */
216 int download_successful;
218 /* Indicates wheather the download failed */
221 /* Indicates wheather we need to parse HTML */
224 /* Indicates wheather we are postprocessing the HTML right now */
225 int is_postprocessing;
227 /* Indicates wheather postprocessing has finished */
230 /* Task ID of the postprocessing task */
231 GNUNET_SCHEDULER_TaskIdentifier pp_task;
233 /* The postprocessing buffer TODO length? */
236 /* The authority of the corresponding host (site of origin) */
239 /* The hostname (Host header field) */
242 /* The LEgacy HOstname (can be empty) */
245 /* The associated daemon list entry */
246 struct MhdHttpList *mhd;
248 /* The associated response */
249 struct MHD_Response *response;
252 struct ProxySetCookieHeader *set_cookies_head;
255 struct ProxySetCookieHeader *set_cookies_tail;
257 /* connection status */
264 struct MHD_Connection *connection;
269 * Struct for set-cookies
271 struct ProxySetCookieHeader
274 struct ProxySetCookieHeader *next;
277 struct ProxySetCookieHeader *prev;
283 /* The port the proxy is running on (default 7777) */
284 static unsigned long port = GNUNET_GNS_PROXY_PORT;
286 /* The CA file (pem) to use for the proxy CA */
287 static char* cafile_opt;
289 /* The listen socket of the proxy */
290 static struct GNUNET_NETWORK_Handle *lsock;
292 /* The listen task ID */
293 GNUNET_SCHEDULER_TaskIdentifier ltask;
295 /* The cURL download task */
296 GNUNET_SCHEDULER_TaskIdentifier curl_download_task;
298 /* The non SSL httpd daemon handle */
299 static struct MHD_Daemon *httpd;
301 /* Number of current mhd connections */
302 static unsigned int total_mhd_connections;
304 /* The cURL multi handle */
305 static CURLM *curl_multi;
307 /* Handle to the GNS service */
308 static struct GNUNET_GNS_Handle *gns_handle;
310 /* DLL for ProxyCurlTasks */
311 static struct ProxyCurlTask *ctasks_head;
313 /* DLL for ProxyCurlTasks */
314 static struct ProxyCurlTask *ctasks_tail;
316 /* DLL for http daemons */
317 static struct MhdHttpList *mhd_httpd_head;
319 /* DLL for http daemons */
320 static struct MhdHttpList *mhd_httpd_tail;
322 /* Handle to the regex for dotplus (.+) replacement in HTML */
323 static regex_t re_dotplus;
325 /* The users local GNS zone hash */
326 static struct GNUNET_CRYPTO_ShortHashCode local_gns_zone;
328 /* The users local private zone */
329 static struct GNUNET_CRYPTO_ShortHashCode local_private_zone;
331 /* The users local shorten zone */
332 static struct GNUNET_CRYPTO_ShortHashCode local_shorten_zone;
334 /* The CA for SSL certificate generation */
335 static struct ProxyCA proxy_ca;
337 /* UNIX domain socket for mhd */
338 struct GNUNET_NETWORK_Handle *mhd_unix_socket;
340 /* Shorten zone private key */
341 struct GNUNET_CRYPTO_RsaPrivateKey *shorten_zonekey;
344 * Checks if name is in tld
346 * @param name the name to check
347 * @param tld the TLD to check for
348 * @return GNUNET_YES or GNUNET_NO
351 is_tld(const char* name, const char* tld)
355 if (strlen(name) <= strlen(tld))
360 offset = strlen(name)-strlen(tld);
361 if (strcmp (name+offset, tld) != 0)
363 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
364 "%s is not in .%s TLD\n", name, tld);
373 * Read HTTP request header field 'Host'
375 * @param cls buffer to write to
376 * @param kind value kind
377 * @param key field key
378 * @param value field value
379 * @return MHD_NO when Host found
382 con_val_iter (void *cls,
383 enum MHD_ValueKind kind,
387 struct ProxyCurlTask *ctask = (struct ProxyCurlTask *) cls;
388 char* buf = ctask->host;
392 if (0 == strcmp ("Host", key))
398 if (0 == strcmp ("Accept-Encoding", key))
403 cstr = GNUNET_malloc (strlen (key) + strlen (hdr_val) + 3);
404 GNUNET_snprintf (cstr, strlen (key) + strlen (hdr_val) + 3,
405 "%s: %s", key, hdr_val);
407 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
408 "Client Header: %s\n", cstr);
410 ctask->headers = curl_slist_append (ctask->headers, cstr);
418 * Check HTTP response header for mime
420 * @param buffer curl buffer
421 * @param size curl blocksize
422 * @param nmemb curl blocknumber
424 * @return size of read bytes
427 curl_check_hdr (void *buffer, size_t size, size_t nmemb, void *cls)
429 size_t bytes = size * nmemb;
430 struct ProxyCurlTask *ctask = cls;
431 int html_mime_len = strlen (HTML_HDR_CONTENT);
432 int cookie_hdr_len = strlen (MHD_HTTP_HEADER_SET_COOKIE);
433 char hdr_mime[html_mime_len+1];
434 char hdr_generic[bytes+1];
435 char new_cookie_hdr[bytes+strlen (ctask->leho)+1];
444 if (html_mime_len <= bytes)
446 memcpy (hdr_mime, buffer, html_mime_len);
447 hdr_mime[html_mime_len] = '\0';
449 if (0 == strcmp (hdr_mime, HTML_HDR_CONTENT))
451 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
452 "Got HTML HTTP response header\n");
453 ctask->parse_content = GNUNET_YES;
457 if (cookie_hdr_len > bytes)
460 memcpy (hdr_generic, buffer, bytes);
461 hdr_generic[bytes] = '\0';
463 if (hdr_generic[bytes-1] == '\n')
464 hdr_generic[bytes-1] = '\0';
466 if (hdr_generic[bytes-2] == '\r')
467 hdr_generic[bytes-2] = '\0';
469 if (0 == memcmp (hdr_generic,
470 MHD_HTTP_HEADER_SET_COOKIE,
473 ndup = GNUNET_strdup (hdr_generic+cookie_hdr_len+1);
474 memset (new_cookie_hdr, 0, sizeof (new_cookie_hdr));
475 tok = strtok (ndup, ";");
477 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
478 "Looking for cookie in : %s\n", hdr_generic);
480 for (; tok != NULL; tok = strtok (NULL, ";"))
482 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
483 "Got Cookie token: %s\n", tok);
484 //memcpy (new_cookie_hdr+offset, tok, strlen (tok));
485 if (0 == memcmp (tok, " domain", strlen (" domain")))
487 cookie_domain = tok + strlen (" domain") + 1;
489 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
490 "Got Set-Cookie Domain: %s\n", cookie_domain);
492 if (strlen (cookie_domain) < strlen (ctask->leho))
494 delta_cdomain = strlen (ctask->leho) - strlen (cookie_domain);
495 if (0 == strcmp (cookie_domain, ctask->leho + (delta_cdomain)))
497 GNUNET_snprintf (new_cookie_hdr+offset,
498 sizeof (new_cookie_hdr),
499 " domain=%s", ctask->authority);
500 offset += strlen (" domain=") + strlen (ctask->authority);
501 new_cookie_hdr[offset] = ';';
506 else if (strlen (cookie_domain) == strlen (ctask->leho))
508 if (0 == strcmp (cookie_domain, ctask->leho))
510 GNUNET_snprintf (new_cookie_hdr+offset,
511 sizeof (new_cookie_hdr),
512 " domain=%s", ctask->host);
513 offset += strlen (" domain=") + strlen (ctask->host);
514 new_cookie_hdr[offset] = ';';
519 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
520 "Cookie domain invalid\n");
524 memcpy (new_cookie_hdr+offset, tok, strlen (tok));
525 offset += strlen (tok);
526 new_cookie_hdr[offset] = ';';
530 //memcpy (new_cookie_hdr+offset, tok, strlen (tok));
534 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
535 "Got Set-Cookie HTTP header %s\n", new_cookie_hdr);
537 //pch = GNUNET_malloc (sizeof (struct ProxySetCookieHeader));
538 //len = strlen (hdr_cookie) - cookie_hdr_len - 1;
539 //pch->cookie = GNUNET_malloc (len + 1);
540 //memset (pch->cookie, 0, len + 1);
541 //memcpy (pch->cookie, hdr_cookie+cookie_hdr_len+1, len);
542 //GNUNET_CONTAINER_DLL_insert (ctask->set_cookies_head,
543 // ctask->set_cookies_tail,
545 //pch = ctask->set_cookies_head;
546 //while (pch != NULL)
548 if (GNUNET_NO == MHD_add_response_header (ctask->response,
549 MHD_HTTP_HEADER_SET_COOKIE,
552 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
553 "MHD: Error adding set-cookie header field %s\n",
554 hdr_generic+cookie_hdr_len+1);
557 //GNUNET_free (pch->cookie);
558 //GNUNET_CONTAINER_DLL_remove (ctask->set_cookies_head,
559 // ctask->set_cookies_tail,
562 //pch = ctask->set_cookies_head;
566 ndup = GNUNET_strdup (hdr_generic);
567 hdr_type = strtok (ndup, ":");
569 if (hdr_type != NULL)
571 hdr_val = strtok (NULL, "");
574 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
575 "Trying to set %s: %s\n",
578 if (GNUNET_NO == MHD_add_response_header (ctask->response,
582 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
583 "MHD: Error adding %s header field %s\n",
597 * @param hd a http daemon list entry
600 run_httpd (struct MhdHttpList *hd);
612 * Task that simply runs MHD main loop
615 * @param tc task context
618 run_mhd (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
621 struct MhdHttpList *hd = cls;
623 //for (hd=mhd_httpd_head; hd != NULL; hd = hd->next)
624 MHD_run (hd->daemon);
629 * Process cURL download bits
631 * @param ptr buffer with data
632 * @param size size of a record
633 * @param nmemb number of records downloaded
635 * @return number of processed bytes
638 callback_download (void *ptr, size_t size, size_t nmemb, void *ctx)
640 const char *cbuf = ptr;
642 struct ProxyCurlTask *ctask = ctx;
645 ctask->ready_to_queue = GNUNET_YES;
646 /*if (ctask->con_status == MHD_NO)
648 MHD_queue_response (ctask->connection,
651 ctask->con_status = MHD_YES;
660 if (total > sizeof (ctask->buffer))
662 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
663 "CURL gave us too much data to handle (%d)!\n",
668 if (ctask->buf_status == BUF_WAIT_FOR_MHD)
670 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
671 "CURL: Waiting for MHD (%s)\n", ctask->url);
672 return CURL_WRITEFUNC_PAUSE;
676 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
677 "CURL: Copying to MHD (%s, %d)\n", ctask->url, total);
678 memcpy (ctask->buffer, cbuf, total);
679 ctask->bytes_in_buffer = total;
680 ctask->buffer_ptr = ctask->buffer;
682 ctask->buf_status = BUF_WAIT_FOR_MHD;
684 //GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
685 // "cURL chunk:\n%s\n", (char*)ctask->buffer);
686 //run_mhd (NULL, NULL);
687 GNUNET_SCHEDULER_add_now (&run_mhd, ctask->mhd);
692 * Ask cURL for the select sets and schedule download
695 curl_download_prepare ();
698 * Callback to free content
700 * @param cls content to free
701 * @param tc task context
704 mhd_content_free (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
706 struct ProxyCurlTask *ctask = cls;
708 if (NULL != ctask->headers)
709 curl_slist_free_all (ctask->headers);
711 if (NULL != ctask->headers)
712 curl_slist_free_all (ctask->resolver);
714 if (NULL != ctask->response)
715 MHD_destroy_response (ctask->response);
723 * Shorten result callback
725 * @param cls the proxycurltask
726 * @param short_name the shortened name (NULL on error)
729 process_shorten (void* cls, const char* short_name)
731 struct ProxyCurlTask *ctask = cls;
733 char tmp[strlen(ctask->pp_buf)]; //TODO length
735 if (NULL == short_name)
737 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
738 "MHD PP: Unable to shorten %s\n",
743 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
744 "MHD PP: Shorten %s -> %s\n",
747 //this is evil.. what about https
748 sprintf (tmp, "href=\"http://%s", short_name);
749 strcpy (ctask->pp_buf, tmp);
751 ctask->pp_finished = GNUNET_YES;
753 GNUNET_SCHEDULER_add_now (&run_mhd, ctask->mhd);
758 * Callback for MHD response
761 * @param pos in buffer
763 * @param max space in buffer
764 * @return number of bytes written
767 mhd_content_cb (void *cls,
772 struct ProxyCurlTask *ctask = cls;
774 size_t bytes_to_copy;
777 regmatch_t m[RE_N_MATCHES];
779 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
780 "MHD: content cb %s\n", ctask->url);
782 if (ctask->download_successful &&
783 (ctask->buf_status == BUF_WAIT_FOR_CURL))
785 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
786 "MHD: sending response for %s\n", ctask->url);
787 ctask->download_in_progress = GNUNET_NO;
788 GNUNET_SCHEDULER_add_now (&mhd_content_free, ctask);
789 GNUNET_SCHEDULER_add_now (&run_mhd, ctask->mhd);
790 total_mhd_connections--;
791 return MHD_CONTENT_READER_END_OF_STREAM;
794 if (ctask->download_error &&
795 (ctask->buf_status == BUF_WAIT_FOR_CURL))
797 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
798 "MHD: sending error response\n");
799 ctask->download_in_progress = GNUNET_NO;
800 GNUNET_SCHEDULER_add_now (&mhd_content_free, ctask);
801 GNUNET_SCHEDULER_add_now (&run_mhd, ctask->mhd);
802 total_mhd_connections--;
803 return MHD_CONTENT_READER_END_WITH_ERROR;
806 if ( ctask->buf_status == BUF_WAIT_FOR_CURL )
809 bytes_to_copy = ctask->bytes_in_buffer;
811 if (ctask->parse_content == GNUNET_YES)
814 GNUNET_log ( GNUNET_ERROR_TYPE_DEBUG,
815 "MHD: We need to parse the HTML %s\n", ctask->buffer_ptr);
817 nomatch = regexec ( &re_dotplus,
818 ctask->buffer_ptr, RE_N_MATCHES, m, 0);
822 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
823 "MHD RE: No match\n");
827 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
830 GNUNET_assert (m[1].rm_so != -1);
832 hostptr = ctask->buffer_ptr+m[1].rm_so;
836 bytes_to_copy = m[0].rm_so;
837 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
838 "Copying %d bytes.\n", m[0].rm_so);
844 if (ctask->is_postprocessing == GNUNET_YES)
848 if ( ctask->pp_finished == GNUNET_NO )
850 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
851 "MHD PP: Waiting for PP of %s\n", ctask->pp_buf);
855 ctask->is_postprocessing = GNUNET_NO;
857 ctask->bytes_in_buffer -= m[0].rm_eo;//(m[1].rm_eo-m[1].rm_so);
858 ctask->buffer_ptr += m[0].rm_eo;//(m[1].rm_eo-m[1].rm_so);
859 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
860 "Skipping next %d bytes in buffer\n", m[0].rm_eo);
862 GNUNET_SCHEDULER_add_now (&run_mhd, ctask->mhd);
864 if ( strlen (ctask->pp_buf) <= max )
866 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
867 "Copying postprocessed %s.\n", ctask->pp_buf);
868 memcpy ( buf, ctask->pp_buf, strlen (ctask->pp_buf) );
869 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
871 ctask->is_postprocessing = GNUNET_NO;
872 return strlen (ctask->pp_buf);
878 memset (ctask->pp_buf, 0, sizeof(ctask->pp_buf));
880 /* If .+ extend with authority */
881 if (*(ctask->buffer_ptr+m[1].rm_eo) == '+')
883 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
885 memcpy (ctask->pp_buf, hostptr, (m[1].rm_eo-m[1].rm_so));
886 strcpy ( ctask->pp_buf+strlen(ctask->pp_buf),
889 /* If .zkey or .tld simply copy the name */
892 memcpy (ctask->pp_buf, hostptr, (m[3].rm_eo-m[1].rm_so));
893 if (is_tld (ctask->pp_buf, GNUNET_GNS_TLD_ZKEY) == GNUNET_NO)
895 if (0 == strcmp (ctask->pp_buf, ctask->leho))
897 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
899 memcpy (ctask->pp_buf,
900 ctask->buffer_ptr+m[0].rm_so,
901 m[1].rm_so-m[0].rm_so);
902 strcpy (ctask->pp_buf+(m[1].rm_so-m[0].rm_so),
904 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
905 "New tag: %s\n", ctask->pp_buf);
906 ctask->is_postprocessing = GNUNET_YES;
907 ctask->pp_finished = GNUNET_YES;
912 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
913 "Link %s is zkey\n", ctask->pp_buf);
916 ctask->is_postprocessing = GNUNET_YES;
917 ctask->pp_finished = GNUNET_NO;
919 GNUNET_GNS_shorten_zone (gns_handle,
932 if ( bytes_to_copy > max )
934 GNUNET_log ( GNUNET_ERROR_TYPE_DEBUG,
935 "MHD: buffer in response too small! (%s)\n",
937 memcpy ( buf, ctask->buffer_ptr, max);
938 ctask->bytes_in_buffer -= max;
939 ctask->buffer_ptr += max;
944 GNUNET_log ( GNUNET_ERROR_TYPE_DEBUG,
945 "MHD: copying %d bytes to mhd response at offset %d\n",
948 memcpy ( buf, ctask->buffer_ptr, bytes_to_copy );
949 copied = bytes_to_copy;
950 if (bytes_to_copy < ctask->bytes_in_buffer)
952 ctask->bytes_in_buffer -= bytes_to_copy;
953 ctask->buffer_ptr += bytes_to_copy;
957 ctask->bytes_in_buffer = 0;
958 ctask->buf_status = BUF_WAIT_FOR_CURL;
959 ctask->buffer_ptr = ctask->buffer;
960 if (NULL != ctask->curl)
961 curl_easy_pause (ctask->curl, CURLPAUSE_CONT);
962 GNUNET_SCHEDULER_add_now (&run_mhd, ctask->mhd);
966 GNUNET_SCHEDULER_add_now (&run_mhd, ctask->mhd);
974 * Task that is run when we are ready to receive more data
978 * @param tc task context
981 curl_task_download (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
984 * Ask cURL for the select sets and schedule download
987 curl_download_prepare ()
994 struct GNUNET_NETWORK_FDSet *grs;
995 struct GNUNET_NETWORK_FDSet *gws;
997 struct GNUNET_TIME_Relative rtime;
1003 mret = curl_multi_fdset (curl_multi, &rs, &ws, &es, &max);
1005 if (mret != CURLM_OK)
1007 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1008 "%s failed at %s:%d: `%s'\n",
1009 "curl_multi_fdset", __FILE__, __LINE__,
1010 curl_multi_strerror (mret));
1011 //TODO cleanup here?
1015 mret = curl_multi_timeout (curl_multi, &to);
1016 rtime = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, to);
1018 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1019 "cURL multi fds: max=%d timeout=%llu\n", max, to);
1021 grs = GNUNET_NETWORK_fdset_create ();
1022 gws = GNUNET_NETWORK_fdset_create ();
1023 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1024 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1025 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1026 "Scheduling task cURL\n");
1028 if (curl_download_task != GNUNET_SCHEDULER_NO_TASK)
1029 GNUNET_SCHEDULER_cancel (curl_download_task);
1031 curl_download_task =
1032 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1035 &curl_task_download, curl_multi);
1036 GNUNET_NETWORK_fdset_destroy (gws);
1037 GNUNET_NETWORK_fdset_destroy (grs);
1043 * Task that is run when we are ready to receive more data
1046 * @param cls closure
1047 * @param tc task context
1050 curl_task_download (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1054 struct CURLMsg *msg;
1056 struct ProxyCurlTask *ctask;
1060 struct ProxyCurlTask *clean_head = NULL;
1061 struct ProxyCurlTask *clean_tail = NULL;
1063 curl_download_task = GNUNET_SCHEDULER_NO_TASK;
1065 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1067 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1068 "Shutdown requested while trying to download\n");
1072 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1080 mret = curl_multi_perform (curl_multi, &running);
1082 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1083 "Running curl tasks: %d\n", running);
1085 ctask = ctasks_head;
1086 for (; ctask != NULL; ctask = ctask->next)
1088 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1089 "CTask: %s\n", ctask->url);
1093 if (num_ctasks != running)
1095 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1096 "%d ctasks, %d curl running\n", num_ctasks, running);
1101 ctask = ctasks_head;
1102 msg = curl_multi_info_read (curl_multi, &msgnum);
1103 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1104 "Messages left: %d\n", msgnum);
1111 if ((msg->data.result != CURLE_OK) &&
1112 (msg->data.result != CURLE_GOT_NOTHING))
1114 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1115 "Download curl failed");
1117 for (; ctask != NULL; ctask = ctask->next)
1119 if (NULL == ctask->curl)
1122 if (memcmp (msg->easy_handle, ctask->curl, sizeof (CURL)) != 0)
1125 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1126 "Download curl failed for task %s: %s.\n",
1128 curl_easy_strerror (msg->data.result));
1129 ctask->download_successful = GNUNET_NO;
1130 ctask->download_error = GNUNET_YES;
1131 if (CURLE_OK == curl_easy_getinfo (ctask->curl,
1132 CURLINFO_RESPONSE_CODE,
1134 ctask->curl_response_code = resp_code;
1135 ctask->ready_to_queue = MHD_YES;
1136 GNUNET_SCHEDULER_add_now (&run_mhd, ctask->mhd);
1138 GNUNET_CONTAINER_DLL_remove (ctasks_head, ctasks_tail,
1140 GNUNET_CONTAINER_DLL_insert (clean_head, clean_tail, ctask);
1143 GNUNET_assert (ctask != NULL);
1147 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1148 "cURL download completed.\n");
1150 for (; ctask != NULL; ctask = ctask->next)
1152 if (NULL == ctask->curl)
1155 if (memcmp (msg->easy_handle, ctask->curl, sizeof (CURL)) != 0)
1158 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1159 "cURL task %s found.\n", ctask->url);
1160 if (CURLE_OK == curl_easy_getinfo (ctask->curl,
1161 CURLINFO_RESPONSE_CODE,
1163 ctask->curl_response_code = resp_code;
1164 ctask->ready_to_queue = MHD_YES;
1165 ctask->download_successful = GNUNET_YES;
1167 GNUNET_SCHEDULER_add_now (&run_mhd, ctask->mhd);
1168 GNUNET_CONTAINER_DLL_remove (ctasks_head, ctasks_tail,
1170 GNUNET_CONTAINER_DLL_insert (clean_head, clean_tail, ctask);
1174 GNUNET_assert (ctask != NULL);
1176 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1177 "curl end %s\n", curl_easy_strerror(msg->data.result));
1183 } while (msgnum > 0);
1185 for (ctask=clean_head; ctask != NULL; ctask = ctask->next)
1187 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1188 "Removing cURL task %s.\n", ctask->url);
1189 curl_multi_remove_handle (curl_multi, ctask->curl);
1190 curl_easy_cleanup (ctask->curl);
1195 for (ctask=ctasks_head; ctask != NULL; ctask = ctask->next)
1200 if (num_ctasks != running)
1202 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1203 "%d ctasks, %d curl running\n", num_ctasks, running);
1206 GNUNET_assert ( num_ctasks == running );
1210 } while (mret == CURLM_CALL_MULTI_PERFORM);
1213 if (mret != CURLM_OK)
1215 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "%s failed at %s:%d: `%s'\n",
1216 "curl_multi_perform", __FILE__, __LINE__,
1217 curl_multi_strerror (mret));
1219 curl_download_prepare();
1223 * Process LEHO lookup
1225 * @param cls the ctask
1226 * @param rd_count number of records returned
1227 * @param rd record data
1230 process_leho_lookup (void *cls,
1232 const struct GNUNET_NAMESTORE_RecordData *rd)
1234 struct ProxyCurlTask *ctask = cls;
1235 char hosthdr[262]; //256 + "Host: "
1239 struct hostent *phost;
1241 char resolvename[512];
1244 strcpy (ctask->leho, "");
1247 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1248 "No LEHO present!\n");
1250 for (i=0; i<rd_count; i++)
1252 if (rd[i].record_type != GNUNET_GNS_RECORD_LEHO)
1255 memcpy (ctask->leho, rd[i].data, rd[i].data_size);
1257 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1258 "Found LEHO %s for %s\n", ctask->leho, ctask->url);
1261 if (0 != strcmp (ctask->leho, ""))
1263 sprintf (hosthdr, "%s%s", "Host: ", ctask->leho);
1264 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1265 "New HTTP header value: %s\n", hosthdr);
1266 ctask->headers = curl_slist_append (ctask->headers, hosthdr);
1267 GNUNET_assert (NULL != ctask->headers);
1268 ret = curl_easy_setopt (ctask->curl, CURLOPT_HTTPHEADER, ctask->headers);
1269 if (CURLE_OK != ret)
1271 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "%s failed at %s:%d: `%s'\n",
1272 "curl_easy_setopt", __FILE__, __LINE__, curl_easy_strerror(ret));
1277 if (ctask->mhd->is_ssl)
1279 phost = (struct hostent*)gethostbyname (ctask->host);
1283 ssl_ip = inet_ntoa(*((struct in_addr*)(phost->h_addr)));
1284 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1285 "SSL target server: %s\n", ssl_ip);
1286 sprintf (resolvename, "%s:%d:%s", ctask->leho, HTTPS_PORT, ssl_ip);
1287 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1288 "Curl resolve: %s\n", resolvename);
1289 ctask->resolver = curl_slist_append ( ctask->resolver, resolvename);
1290 curl_easy_setopt (ctask->curl, CURLOPT_RESOLVE, ctask->resolver);
1291 sprintf (curlurl, "https://%s%s", ctask->leho, ctask->url);
1292 curl_easy_setopt (ctask->curl, CURLOPT_URL, curlurl);
1296 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1297 "gethostbyname failed for %s!\n", ctask->host);
1298 ctask->download_successful = GNUNET_NO;
1299 ctask->download_error = GNUNET_YES;
1304 if (CURLM_OK != (mret=curl_multi_add_handle (curl_multi, ctask->curl)))
1306 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1307 "%s failed at %s:%d: `%s'\n",
1308 "curl_multi_add_handle", __FILE__, __LINE__,
1309 curl_multi_strerror (mret));
1310 ctask->download_successful = GNUNET_NO;
1311 ctask->download_error = GNUNET_YES;
1314 GNUNET_CONTAINER_DLL_insert (ctasks_head, ctasks_tail, ctask);
1316 curl_download_prepare ();
1321 * Initialize download and trigger curl
1323 * @param cls the proxycurltask
1324 * @param auth_name the name of the authority (site of origin) of ctask->host
1328 process_get_authority (void *cls,
1329 const char* auth_name)
1331 struct ProxyCurlTask *ctask = cls;
1333 if (NULL == auth_name)
1335 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1336 "Get authority failed!\n");
1337 strcpy (ctask->authority, "");
1341 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1342 "Get authority yielded %s\n", auth_name);
1343 strcpy (ctask->authority, auth_name);
1346 GNUNET_GNS_lookup_zone (gns_handle,
1349 GNUNET_GNS_RECORD_LEHO,
1350 GNUNET_YES, //Only cached for performance
1352 &process_leho_lookup,
1357 * Task run whenever HTTP server operations are pending.
1360 * @param tc sched context
1363 do_httpd (void *cls,
1364 const struct GNUNET_SCHEDULER_TaskContext *tc);
1367 * Main MHD callback for handling requests.
1370 * @param con MHD connection handle
1371 * @param url the url in the request
1372 * @param meth the HTTP method used ("GET", "PUT", etc.)
1373 * @param ver the HTTP version string (i.e. "HTTP/1.1")
1374 * @param upload_data the data being uploaded (excluding HEADERS,
1375 * for a POST that fits into memory and that is encoded
1376 * with a supported encoding, the POST data will NOT be
1377 * given in upload_data and is instead available as
1378 * part of MHD_get_connection_values; very large POST
1379 * data *will* be made available incrementally in
1381 * @param upload_data_size set initially to the size of the
1382 * upload_data provided; the method must update this
1383 * value to the number of bytes NOT processed;
1384 * @param con_cls pointer to location where we store the 'struct Request'
1385 * @return MHD_YES if the connection was handled successfully,
1386 * MHD_NO if the socket must be closed due to a serious
1387 * error while handling the request
1390 create_response (void *cls,
1391 struct MHD_Connection *con,
1395 const char *upload_data,
1396 size_t *upload_data_size,
1399 struct MhdHttpList* hd = cls;
1400 const char* page = "<html><head><title>gnoxy</title>"\
1401 "</head><body>cURL fail</body></html>";
1406 struct ProxyCurlTask *ctask;
1409 if (0 != strcmp (meth, "GET"))
1412 if (0 != *upload_data_size)
1415 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1419 if (NULL == *con_cls)
1421 ctask = GNUNET_malloc (sizeof (struct ProxyCurlTask));
1425 if (curl_multi == NULL)
1426 curl_multi = curl_multi_init ();
1428 ctask->curl = curl_easy_init();
1430 if ((ctask->curl == NULL) || (curl_multi == NULL))
1432 ctask->response = MHD_create_response_from_buffer (strlen (page),
1434 MHD_RESPMEM_PERSISTENT);
1435 ret = MHD_queue_response (con,
1438 MHD_destroy_response (ctask->response);
1439 GNUNET_free (ctask);
1445 ctask->headers = NULL;
1446 ctask->resolver = NULL;
1447 ctask->buffer_ptr = NULL;
1448 ctask->download_in_progress = GNUNET_YES;
1449 ctask->download_successful = GNUNET_NO;
1450 ctask->buf_status = BUF_WAIT_FOR_CURL;
1451 ctask->bytes_in_buffer = 0;
1452 ctask->parse_content = GNUNET_NO;
1453 ctask->connection = con;
1454 ctask->ready_to_queue = MHD_NO;
1455 ctask->fin = GNUNET_NO;
1456 ctask->headers = NULL;
1457 ctask->curl_response_code = MHD_HTTP_OK;
1460 MHD_get_connection_values (con,
1462 &con_val_iter, ctask);
1464 curl_easy_setopt (ctask->curl, CURLOPT_HEADERFUNCTION, &curl_check_hdr);
1465 curl_easy_setopt (ctask->curl, CURLOPT_HEADERDATA, ctask);
1466 curl_easy_setopt (ctask->curl, CURLOPT_WRITEFUNCTION, &callback_download);
1467 curl_easy_setopt (ctask->curl, CURLOPT_WRITEDATA, ctask);
1468 curl_easy_setopt (ctask->curl, CURLOPT_FOLLOWLOCATION, 0);
1469 //curl_easy_setopt (ctask->curl, CURLOPT_MAXREDIRS, 4);
1470 /* no need to abort if the above failed */
1471 if (GNUNET_NO == ctask->mhd->is_ssl)
1473 sprintf (curlurl, "http://%s%s", ctask->host, url);
1474 curl_easy_setopt (ctask->curl, CURLOPT_URL, curlurl);
1475 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1476 "Adding new curl task for %s\n", curlurl);
1478 strcpy (ctask->url, url);
1480 //curl_easy_setopt (ctask->curl, CURLOPT_URL, curlurl);
1481 curl_easy_setopt (ctask->curl, CURLOPT_FAILONERROR, 1);
1482 curl_easy_setopt (ctask->curl, CURLOPT_CONNECTTIMEOUT, 600L);
1483 curl_easy_setopt (ctask->curl, CURLOPT_TIMEOUT, 600L);
1485 GNUNET_GNS_get_authority (gns_handle,
1487 &process_get_authority,
1490 ctask->response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN,
1496 ctask->ready_to_queue = GNUNET_NO;
1497 ctask->fin = GNUNET_NO;
1501 ctask = (struct ProxyCurlTask *) *con_cls;
1503 if (ctask->fin == GNUNET_YES)
1506 if (ctask->ready_to_queue == GNUNET_YES)
1508 ctask->fin = GNUNET_YES;
1510 ret = MHD_queue_response (con, ctask->curl_response_code, ctask->response);
1511 GNUNET_SCHEDULER_add_now (&run_mhd, ctask->mhd);
1518 //MHD_destroy_response (response);
1532 struct MhdHttpList *hd;
1534 for (hd=mhd_httpd_head; hd != NULL; hd = hd->next)
1542 * @param hd the daemon to run
1545 run_httpd (struct MhdHttpList *hd)
1550 struct GNUNET_NETWORK_FDSet *wrs;
1551 struct GNUNET_NETWORK_FDSet *wws;
1552 struct GNUNET_NETWORK_FDSet *wes;
1555 unsigned MHD_LONG_LONG timeout;
1556 struct GNUNET_TIME_Relative tv;
1561 wrs = GNUNET_NETWORK_fdset_create ();
1562 wes = GNUNET_NETWORK_fdset_create ();
1563 wws = GNUNET_NETWORK_fdset_create ();
1565 GNUNET_assert (MHD_YES == MHD_get_fdset (hd->daemon, &rs, &ws, &es, &max));
1568 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1569 "MHD fds: max=%d\n", max);
1571 haveto = MHD_get_timeout (hd->daemon, &timeout);
1573 if (haveto == MHD_YES)
1574 tv.rel_value = (uint64_t) timeout;
1576 tv = GNUNET_TIME_UNIT_FOREVER_REL;
1577 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
1578 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
1579 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
1581 if (hd->httpd_task != GNUNET_SCHEDULER_NO_TASK)
1582 GNUNET_SCHEDULER_cancel (hd->httpd_task);
1584 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_HIGH,
1587 GNUNET_NETWORK_fdset_destroy (wrs);
1588 GNUNET_NETWORK_fdset_destroy (wws);
1589 GNUNET_NETWORK_fdset_destroy (wes);
1594 * Task run whenever HTTP server operations are pending.
1597 * @param tc sched context
1600 do_httpd (void *cls,
1601 const struct GNUNET_SCHEDULER_TaskContext *tc)
1603 struct MhdHttpList *hd = cls;
1605 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
1607 MHD_run (hd->daemon);
1613 * Read data from socket
1615 * @param cls the closure
1616 * @param tc scheduler context
1619 do_read (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
1622 * Read from remote end
1624 * @param cls closure
1625 * @param tc scheduler context
1628 do_read_remote (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
1631 * Write data to remote socket
1633 * @param cls the closure
1634 * @param tc scheduler context
1637 do_write_remote (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1639 struct Socks5Request *s5r = cls;
1642 s5r->fwdwtask = GNUNET_SCHEDULER_NO_TASK;
1644 if ((NULL != tc->read_ready) &&
1645 (GNUNET_NETWORK_fdset_isset (tc->write_ready, s5r->remote_sock)) &&
1646 ((len = GNUNET_NETWORK_socket_send (s5r->remote_sock, s5r->rbuf,
1649 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1650 "Successfully sent %d bytes to remote socket\n",
1655 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "write remote");
1657 if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
1658 GNUNET_SCHEDULER_cancel (s5r->rtask);
1659 if (s5r->wtask != GNUNET_SCHEDULER_NO_TASK)
1660 GNUNET_SCHEDULER_cancel (s5r->wtask);
1661 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
1662 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
1663 GNUNET_NETWORK_socket_close (s5r->remote_sock);
1664 GNUNET_NETWORK_socket_close (s5r->sock);
1670 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
1677 * Clean up s5r handles
1679 * @param s5r the handle to destroy
1682 cleanup_s5r (struct Socks5Request *s5r)
1684 if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
1685 GNUNET_SCHEDULER_cancel (s5r->rtask);
1686 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
1687 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
1688 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
1689 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
1691 if (NULL != s5r->remote_sock)
1692 GNUNET_NETWORK_socket_close (s5r->remote_sock);
1693 if ((NULL != s5r->sock) && (s5r->cleanup_sock == GNUNET_YES))
1694 GNUNET_NETWORK_socket_close (s5r->sock);
1700 * Write data to socket
1702 * @param cls the closure
1703 * @param tc scheduler context
1706 do_write (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1708 struct Socks5Request *s5r = cls;
1711 s5r->wtask = GNUNET_SCHEDULER_NO_TASK;
1713 if ((NULL != tc->read_ready) &&
1714 (GNUNET_NETWORK_fdset_isset (tc->write_ready, s5r->sock)) &&
1715 ((len = GNUNET_NETWORK_socket_send (s5r->sock, s5r->wbuf,
1718 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1719 "Successfully sent %d bytes to socket\n",
1725 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "write");
1726 s5r->cleanup = GNUNET_YES;
1727 s5r->cleanup_sock = GNUNET_YES;
1733 if (GNUNET_YES == s5r->cleanup)
1739 if ((s5r->state == SOCKS5_DATA_TRANSFER) &&
1740 (s5r->fwdrtask == GNUNET_SCHEDULER_NO_TASK))
1742 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
1744 &do_read_remote, s5r);
1748 * Read from remote end
1750 * @param cls closure
1751 * @param tc scheduler context
1754 do_read_remote (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1756 struct Socks5Request *s5r = cls;
1758 s5r->fwdrtask = GNUNET_SCHEDULER_NO_TASK;
1761 if ((NULL != tc->write_ready) &&
1762 (GNUNET_NETWORK_fdset_isset (tc->read_ready, s5r->remote_sock)) &&
1763 (s5r->wbuf_len = GNUNET_NETWORK_socket_recv (s5r->remote_sock, s5r->wbuf,
1764 sizeof (s5r->wbuf))))
1766 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1767 "Successfully read %d bytes from remote socket\n",
1772 if (s5r->wbuf_len == 0)
1773 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1774 "0 bytes received from remote... graceful shutdown!\n");
1775 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
1776 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
1777 if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
1778 GNUNET_SCHEDULER_cancel (s5r->rtask);
1780 GNUNET_NETWORK_socket_close (s5r->remote_sock);
1781 s5r->remote_sock = NULL;
1782 GNUNET_NETWORK_socket_close (s5r->sock);
1788 s5r->wtask = GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
1796 * Adds a socket to MHD
1798 * @param h the handle to the socket to add
1799 * @param daemon the daemon to add the fd to
1800 * @return whatever MHD_add_connection returns
1803 add_handle_to_mhd (struct GNUNET_NETWORK_Handle *h, struct MHD_Daemon *daemon)
1806 struct sockaddr *addr;
1809 fd = dup (GNUNET_NETWORK_get_fd (h));
1810 addr = GNUNET_NETWORK_get_addr (h);
1811 len = GNUNET_NETWORK_get_addrlen (h);
1813 return MHD_add_connection (daemon, fd, addr, len);
1817 * Calculate size of file
1819 * @param filename name of file
1820 * @return filesize or 0 on error
1823 get_file_size (const char* filename)
1827 fp = fopen (filename, "rb");
1832 if ((0 != fseek (fp, 0, SEEK_END)) || (-1 == (size = ftell (fp))))
1844 * Read file in filename
1846 * @param filename file to read
1847 * @param size pointer where filesize is stored
1851 load_file (const char* filename, unsigned int* size)
1856 *size = get_file_size (filename);
1860 fp = fopen (filename, "rb");
1864 buffer = GNUNET_malloc (*size);
1871 if (*size != fread (buffer, 1, *size, fp))
1873 GNUNET_free (buffer);
1882 * Load PEM key from file
1884 * @param key where to store the data
1885 * @param keyfile path to the PEM file
1888 load_key_from_file (gnutls_x509_privkey_t key, char* keyfile)
1890 gnutls_datum_t key_data;
1891 key_data.data = NULL;
1894 key_data.data = (unsigned char*)load_file (keyfile, &key_data.size);
1896 ret = gnutls_x509_privkey_import (key, &key_data,
1897 GNUTLS_X509_FMT_PEM);
1899 if (GNUTLS_E_SUCCESS != ret)
1901 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1902 "Unable to import private key %s(ret=%d)\n", key_data.data, ret);
1906 GNUNET_free (key_data.data);
1910 * Load cert from file
1912 * @param crt struct to store data in
1913 * @param certfile path to pem file
1916 load_cert_from_file (gnutls_x509_crt_t crt, char* certfile)
1918 gnutls_datum_t cert_data;
1919 cert_data.data = NULL;
1922 cert_data.data = (unsigned char*)load_file (certfile, &cert_data.size);
1924 ret = gnutls_x509_crt_import (crt, &cert_data,
1925 GNUTLS_X509_FMT_PEM);
1926 if (GNUTLS_E_SUCCESS != ret)
1928 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1929 "Unable to import certificate %s(ret=%d)\n", certfile, ret);
1933 GNUNET_free (cert_data.data);
1939 * Generate new certificate for specific name
1941 * @param name the subject name to generate a cert for
1942 * @return a struct holding the PEM data
1944 static struct ProxyGNSCertificate *
1945 generate_gns_certificate (const char *name)
1949 unsigned int serial;
1950 size_t key_buf_size;
1951 size_t cert_buf_size;
1952 gnutls_x509_crt_t request;
1956 ret = gnutls_x509_crt_init (&request);
1958 if (GNUTLS_E_SUCCESS != ret)
1963 ret = gnutls_x509_crt_set_key (request, proxy_ca.key);
1965 if (GNUTLS_E_SUCCESS != ret)
1970 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Generating cert\n");
1972 struct ProxyGNSCertificate *pgc =
1973 GNUNET_malloc (sizeof (struct ProxyGNSCertificate));
1975 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Adding DNs\n");
1977 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_COUNTRY_NAME,
1980 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_ORGANIZATION_NAME,
1983 gnutls_x509_crt_set_dn_by_oid (request, GNUTLS_OID_X520_COMMON_NAME,
1984 0, name, strlen (name));
1986 ret = gnutls_x509_crt_set_version (request, 3);
1988 ret = gnutls_rnd (GNUTLS_RND_NONCE, &serial, sizeof (serial));
1990 etime = time (NULL);
1991 tm_data = localtime (&etime);
1994 ret = gnutls_x509_crt_set_serial (request,
1998 ret = gnutls_x509_crt_set_activation_time (request,
2001 etime = mktime (tm_data);
2008 ret = gnutls_x509_crt_set_expiration_time (request,
2010 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Signing...\n");
2012 ret = gnutls_x509_crt_sign (request, proxy_ca.cert, proxy_ca.key);
2014 key_buf_size = sizeof (pgc->key);
2015 cert_buf_size = sizeof (pgc->cert);
2017 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Exporting certificate...\n");
2019 gnutls_x509_crt_export (request, GNUTLS_X509_FMT_PEM,
2020 pgc->cert, &cert_buf_size);
2022 gnutls_x509_privkey_export (proxy_ca.key, GNUTLS_X509_FMT_PEM,
2023 pgc->key, &key_buf_size);
2026 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Cleaning up\n");
2027 gnutls_x509_crt_deinit (request);
2035 * Accept policy for mhdaemons
2038 * @param addr the sockaddr
2039 * @param addrlen the sockaddr length
2040 * @return MHD_NO if sockaddr is wrong or #conns too high
2043 accept_cb (void* cls, const struct sockaddr *addr, socklen_t addrlen)
2045 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2046 "In MHD accept policy cb\n");
2050 if (addr->sa_family == AF_UNIX)
2054 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2055 "Connection accepted\n");
2062 * Adds a socket to an SSL MHD instance
2063 * It is important the the domain name is
2064 * correct. In most cases we need to start a new daemon
2066 * @param h the handle to add to a daemon
2067 * @param domain the domain the ssl daemon has to serve
2068 * @return MHD_YES on success
2071 add_handle_to_ssl_mhd (struct GNUNET_NETWORK_Handle *h, char* domain)
2073 struct MhdHttpList *hd = NULL;
2074 struct ProxyGNSCertificate *pgc;
2075 struct NetworkHandleList *nh;
2077 for (hd = mhd_httpd_head; hd != NULL; hd = hd->next)
2079 if (0 == strcmp (hd->domain, domain))
2086 pgc = generate_gns_certificate (domain);
2088 hd = GNUNET_malloc (sizeof (struct MhdHttpList));
2089 hd->is_ssl = GNUNET_YES;
2090 strcpy (hd->domain, domain);
2091 hd->proxy_cert = pgc;
2094 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2095 "No previous SSL instance found... starting new one for %s\n",
2098 hd->daemon = MHD_start_daemon (MHD_USE_DEBUG | MHD_USE_SSL, 4444,
2100 &create_response, hd,
2101 MHD_OPTION_LISTEN_SOCKET, GNUNET_NETWORK_get_fd (mhd_unix_socket),
2102 MHD_OPTION_CONNECTION_LIMIT, MHD_MAX_CONNECTIONS,
2103 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
2104 MHD_OPTION_NOTIFY_COMPLETED,
2106 MHD_OPTION_HTTPS_MEM_KEY, pgc->key,
2107 MHD_OPTION_HTTPS_MEM_CERT, pgc->cert,
2110 GNUNET_assert (hd->daemon != NULL);
2111 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
2113 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head, mhd_httpd_tail, hd);
2116 nh = GNUNET_malloc (sizeof (struct NetworkHandleList));
2119 GNUNET_CONTAINER_DLL_insert (hd->socket_handles_head,
2120 hd->socket_handles_tail,
2123 return add_handle_to_mhd (h, hd->daemon);
2129 * Read data from incoming connection
2131 * @param cls the closure
2132 * @param tc the scheduler context
2135 do_read (void* cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2137 struct Socks5Request *s5r = cls;
2138 struct socks5_client_hello *c_hello;
2139 struct socks5_server_hello *s_hello;
2140 struct socks5_client_request *c_req;
2141 struct socks5_server_response *s_resp;
2147 struct hostent *phost;
2149 struct sockaddr_in remote_addr;
2150 struct in_addr *r_sin_addr;
2152 struct NetworkHandleList *nh;
2154 s5r->rtask = GNUNET_SCHEDULER_NO_TASK;
2156 if ((NULL != tc->write_ready) &&
2157 (GNUNET_NETWORK_fdset_isset (tc->read_ready, s5r->sock)) &&
2158 (s5r->rbuf_len = GNUNET_NETWORK_socket_recv (s5r->sock, s5r->rbuf,
2159 sizeof (s5r->rbuf))))
2161 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2162 "Successfully read %d bytes from socket\n",
2167 if (s5r->rbuf_len != 0)
2168 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "read");
2170 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "client disco!\n");
2172 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
2173 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2174 if (s5r->wtask != GNUNET_SCHEDULER_NO_TASK)
2175 GNUNET_SCHEDULER_cancel (s5r->wtask);
2176 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
2177 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2178 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2179 GNUNET_NETWORK_socket_close (s5r->sock);
2184 if (s5r->state == SOCKS5_INIT)
2186 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2188 c_hello = (struct socks5_client_hello*)&s5r->rbuf;
2190 GNUNET_assert (c_hello->version == SOCKS_VERSION_5);
2192 s_hello = (struct socks5_server_hello*)&s5r->wbuf;
2193 s5r->wbuf_len = sizeof( struct socks5_server_hello );
2195 s_hello->version = c_hello->version;
2196 s_hello->auth_method = SOCKS_AUTH_NONE;
2198 /* Write response to client */
2199 s5r->wtask = GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2203 s5r->rtask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2207 s5r->state = SOCKS5_REQUEST;
2211 if (s5r->state == SOCKS5_REQUEST)
2213 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2214 "Processing SOCKS5 request\n");
2215 c_req = (struct socks5_client_request*)&s5r->rbuf;
2216 s_resp = (struct socks5_server_response*)&s5r->wbuf;
2217 //Only 10byte for ipv4 response!
2218 s5r->wbuf_len = 10;//sizeof (struct socks5_server_response);
2220 GNUNET_assert (c_req->addr_type == 3);
2222 dom_len = *((uint8_t*)(&(c_req->addr_type) + 1));
2223 memset(domain, 0, sizeof(domain));
2224 strncpy(domain, (char*)(&(c_req->addr_type) + 2), dom_len);
2225 req_port = *((uint16_t*)(&(c_req->addr_type) + 2 + dom_len));
2227 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2228 "Requested connection is %s:%d\n",
2232 if (is_tld (domain, GNUNET_GNS_TLD) ||
2233 is_tld (domain, GNUNET_GNS_TLD_ZKEY))
2235 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2236 "Requested connection is gnunet tld\n",
2240 if (ntohs(req_port) == HTTPS_PORT)
2242 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2243 "Requested connection is HTTPS\n");
2244 ret = add_handle_to_ssl_mhd ( s5r->sock, domain );
2246 else if (NULL != httpd)
2248 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2249 "Requested connection is HTTP\n");
2250 nh = GNUNET_malloc (sizeof (struct NetworkHandleList));
2253 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head->socket_handles_head,
2254 mhd_httpd_head->socket_handles_tail,
2257 ret = add_handle_to_mhd ( s5r->sock, httpd );
2262 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2263 _("Failed to start HTTP server\n"));
2264 s_resp->version = 0x05;
2265 s_resp->reply = 0x01;
2266 s5r->cleanup = GNUNET_YES;
2267 s5r->cleanup_sock = GNUNET_YES;
2269 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2275 /* Signal success */
2276 s_resp->version = 0x05;
2277 s_resp->reply = 0x00;
2278 s_resp->reserved = 0x00;
2279 s_resp->addr_type = 0x01;
2281 s5r->cleanup = GNUNET_YES;
2282 s5r->cleanup_sock = GNUNET_NO;
2284 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2292 phost = (struct hostent*)gethostbyname (domain);
2295 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2296 "Resolve %s error!\n", domain );
2297 s_resp->version = 0x05;
2298 s_resp->reply = 0x01;
2299 s5r->cleanup = GNUNET_YES;
2300 s5r->cleanup_sock = GNUNET_YES;
2302 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2308 s5r->remote_sock = GNUNET_NETWORK_socket_create (AF_INET,
2311 r_sin_addr = (struct in_addr*)(phost->h_addr);
2312 remote_ip = r_sin_addr->s_addr;
2313 memset(&remote_addr, 0, sizeof(remote_addr));
2314 remote_addr.sin_family = AF_INET;
2315 #if HAVE_SOCKADDR_IN_SIN_LEN
2316 remote_addr.sin_len = sizeof (remote_addr);
2318 remote_addr.sin_addr.s_addr = remote_ip;
2319 remote_addr.sin_port = req_port;
2321 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2322 "target server: %s:%u\n", inet_ntoa(remote_addr.sin_addr),
2326 GNUNET_NETWORK_socket_connect ( s5r->remote_sock,
2327 (const struct sockaddr*)&remote_addr,
2328 sizeof (remote_addr)))
2329 && (errno != EINPROGRESS))
2331 GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "connect");
2332 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2333 "socket request error...\n");
2334 s_resp->version = 0x05;
2335 s_resp->reply = 0x01;
2337 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2344 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2345 "new remote connection\n");
2347 s_resp->version = 0x05;
2348 s_resp->reply = 0x00;
2349 s_resp->reserved = 0x00;
2350 s_resp->addr_type = 0x01;
2352 s5r->state = SOCKS5_DATA_TRANSFER;
2355 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2359 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2367 if (s5r->state == SOCKS5_DATA_TRANSFER)
2369 if ((s5r->remote_sock == NULL) || (s5r->rbuf_len == 0))
2371 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2372 "Closing connection to client\n");
2373 if (s5r->rtask != GNUNET_SCHEDULER_NO_TASK)
2374 GNUNET_SCHEDULER_cancel (s5r->rtask);
2375 if (s5r->fwdwtask != GNUNET_SCHEDULER_NO_TASK)
2376 GNUNET_SCHEDULER_cancel (s5r->fwdwtask);
2377 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
2378 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2379 if (s5r->fwdrtask != GNUNET_SCHEDULER_NO_TASK)
2380 GNUNET_SCHEDULER_cancel (s5r->fwdrtask);
2382 if (s5r->remote_sock != NULL)
2383 GNUNET_NETWORK_socket_close (s5r->remote_sock);
2384 GNUNET_NETWORK_socket_close (s5r->sock);
2389 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2390 "forwarding %d bytes from client\n", s5r->rbuf_len);
2393 GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL,
2395 &do_write_remote, s5r);
2397 if (s5r->fwdrtask == GNUNET_SCHEDULER_NO_TASK)
2400 GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2402 &do_read_remote, s5r);
2408 //GNUNET_CONTAINER_DLL_remove (s5conns.head, s5conns.tail, s5r);
2414 * Accept new incoming connections
2416 * @param cls the closure
2417 * @param tc the scheduler context
2420 do_accept (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2422 struct GNUNET_NETWORK_Handle *s;
2423 struct Socks5Request *s5r;
2425 ltask = GNUNET_SCHEDULER_NO_TASK;
2426 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
2429 ltask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2433 s = GNUNET_NETWORK_socket_accept (lsock, NULL, NULL);
2437 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "accept");
2441 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2442 "Got an inbound connection, waiting for data\n");
2444 s5r = GNUNET_malloc (sizeof (struct Socks5Request));
2446 s5r->state = SOCKS5_INIT;
2447 s5r->wtask = GNUNET_SCHEDULER_NO_TASK;
2448 s5r->fwdwtask = GNUNET_SCHEDULER_NO_TASK;
2449 s5r->fwdrtask = GNUNET_SCHEDULER_NO_TASK;
2450 s5r->rtask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2453 //GNUNET_CONTAINER_DLL_insert (s5conns.head, s5conns.tail, s5r);
2458 * Task run on shutdown
2460 * @param cls closure
2461 * @param tc task context
2464 do_shutdown (void *cls,
2465 const struct GNUNET_SCHEDULER_TaskContext *tc)
2468 struct MhdHttpList *hd;
2469 struct MhdHttpList *tmp_hd;
2470 struct NetworkHandleList *nh;
2471 struct NetworkHandleList *tmp_nh;
2472 struct ProxyCurlTask *ctask;
2473 struct ProxyCurlTask *ctask_tmp;
2475 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
2476 "Shutting down...\n");
2478 gnutls_global_deinit ();
2480 if (GNUNET_SCHEDULER_NO_TASK != curl_download_task)
2482 GNUNET_SCHEDULER_cancel (curl_download_task);
2483 curl_download_task = GNUNET_SCHEDULER_NO_TASK;
2486 for (hd = mhd_httpd_head; hd != NULL; hd = tmp_hd)
2490 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2491 "Stopping daemon\n");
2493 if (GNUNET_SCHEDULER_NO_TASK != hd->httpd_task)
2495 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2496 "Stopping select task %d\n",
2498 GNUNET_SCHEDULER_cancel (hd->httpd_task);
2499 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
2502 if (NULL != hd->daemon)
2504 MHD_stop_daemon (hd->daemon);
2508 for (nh = hd->socket_handles_head; nh != NULL; nh = tmp_nh)
2512 GNUNET_NETWORK_socket_close (nh->h);
2517 if (NULL != hd->proxy_cert)
2519 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2520 "Free certificate\n");
2521 GNUNET_free (hd->proxy_cert);
2527 for (ctask=ctasks_head; ctask != NULL; ctask=ctask_tmp)
2529 ctask_tmp = ctask->next;
2531 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2532 "Cleaning up cURL task\n");
2534 if (ctask->curl != NULL)
2535 curl_easy_cleanup (ctask->curl);
2537 if (NULL != ctask->headers)
2538 curl_slist_free_all (ctask->headers);
2539 if (NULL != ctask->resolver)
2540 curl_slist_free_all (ctask->resolver);
2542 if (NULL != ctask->response)
2543 MHD_destroy_response (ctask->response);
2546 GNUNET_free (ctask);
2549 GNUNET_GNS_disconnect (gns_handle);
2554 * Compiles a regex for us
2556 * @param re ptr to re struct
2557 * @param rt the expression to compile
2558 * @return 0 on success
2561 compile_regex (regex_t *re, const char* rt)
2566 status = regcomp (re, rt, REG_EXTENDED|REG_NEWLINE);
2569 regerror (status, re, err, 1024);
2570 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2571 "Regex error compiling '%s': %s\n", rt, err);
2579 * Loads the users local zone key
2581 * @return GNUNET_YES on success
2584 load_local_zone_key (const struct GNUNET_CONFIGURATION_Handle *cfg)
2587 struct GNUNET_CRYPTO_RsaPrivateKey *key = NULL;
2588 struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pkey;
2589 struct GNUNET_CRYPTO_ShortHashCode *zone = NULL;
2590 struct GNUNET_CRYPTO_ShortHashAsciiEncoded zonename;
2592 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
2593 "ZONEKEY", &keyfile))
2595 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2596 "Unable to load zone key config value!\n");
2600 if (GNUNET_NO == GNUNET_DISK_file_test (keyfile))
2602 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2603 "Unable to load zone key %s!\n", keyfile);
2604 GNUNET_free(keyfile);
2608 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
2609 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
2610 GNUNET_CRYPTO_short_hash(&pkey,
2611 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
2613 zone = &local_gns_zone;
2614 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
2615 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2616 "Using zone: %s!\n", &zonename);
2617 GNUNET_CRYPTO_rsa_key_free(key);
2618 GNUNET_free(keyfile);
2620 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
2621 "PRIVATE_ZONEKEY", &keyfile))
2623 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2624 "Unable to load private zone key config value!\n");
2628 if (GNUNET_NO == GNUNET_DISK_file_test (keyfile))
2630 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2631 "Unable to load private zone key %s!\n", keyfile);
2632 GNUNET_free(keyfile);
2636 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
2637 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
2638 GNUNET_CRYPTO_short_hash(&pkey,
2639 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
2640 &local_private_zone);
2641 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
2642 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2643 "Using private zone: %s!\n", &zonename);
2644 GNUNET_CRYPTO_rsa_key_free(key);
2645 GNUNET_free(keyfile);
2647 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns",
2648 "SHORTEN_ZONEKEY", &keyfile))
2650 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2651 "Unable to load shorten zone key config value!\n");
2655 if (GNUNET_NO == GNUNET_DISK_file_test (keyfile))
2657 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2658 "Unable to load shorten zone key %s!\n", keyfile);
2659 GNUNET_free(keyfile);
2663 key = GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
2664 GNUNET_CRYPTO_rsa_key_get_public (key, &pkey);
2665 GNUNET_CRYPTO_short_hash(&pkey,
2666 sizeof(struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
2667 &local_shorten_zone);
2668 GNUNET_CRYPTO_short_hash_to_enc (zone, &zonename);
2669 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2670 "Using shorten zone: %s!\n", &zonename);
2671 GNUNET_CRYPTO_rsa_key_free(key);
2672 GNUNET_free(keyfile);
2678 * Main function that will be run
2680 * @param cls closure
2681 * @param args remaining command-line arguments
2682 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
2683 * @param cfg configuration
2686 run (void *cls, char *const *args, const char *cfgfile,
2687 const struct GNUNET_CONFIGURATION_Handle *cfg)
2689 struct sockaddr_in sa;
2690 struct MhdHttpList *hd;
2691 struct sockaddr_un mhd_unix_sock_addr;
2693 char* proxy_sockfile;
2694 char* cafile_cfg = NULL;
2699 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
2702 cafile = cafile_opt;
2706 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns-proxy",
2710 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2711 "Unable to load proxy CA config value!\n");
2712 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2713 "No proxy CA provided!\n");
2716 cafile = cafile_cfg;
2719 gnutls_global_init ();
2721 gnutls_x509_crt_init (&proxy_ca.cert);
2722 gnutls_x509_privkey_init (&proxy_ca.key);
2724 load_cert_from_file (proxy_ca.cert, cafile);
2725 load_key_from_file (proxy_ca.key, cafile);
2727 GNUNET_free_non_null (cafile_cfg);
2729 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2730 "Loading Template\n");
2732 compile_regex (&re_dotplus, (char*) RE_A_HREF);
2734 gns_handle = GNUNET_GNS_connect (cfg);
2736 if (GNUNET_NO == load_local_zone_key (cfg))
2738 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2739 "Unable to load zone!\n");
2743 if (NULL == gns_handle)
2745 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2746 "Unable to connect to GNS!\n");
2750 memset (&sa, 0, sizeof (sa));
2751 sa.sin_family = AF_INET;
2752 sa.sin_port = htons (port);
2753 #if HAVE_SOCKADDR_IN_SIN_LEN
2754 sa.sin_len = sizeof (sa);
2757 lsock = GNUNET_NETWORK_socket_create (AF_INET,
2761 if ((NULL == lsock) ||
2763 GNUNET_NETWORK_socket_bind (lsock, (const struct sockaddr *) &sa,
2766 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2767 "Failed to create listen socket bound to `%s'",
2768 GNUNET_a2s ((const struct sockaddr *) &sa, sizeof (sa)));
2770 GNUNET_NETWORK_socket_close (lsock);
2774 if (GNUNET_OK != GNUNET_NETWORK_socket_listen (lsock, 5))
2776 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2777 "Failed to listen on socket bound to `%s'",
2778 GNUNET_a2s ((const struct sockaddr *) &sa, sizeof (sa)));
2782 ltask = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL,
2783 lsock, &do_accept, NULL);
2788 if (0 != curl_global_init (CURL_GLOBAL_WIN32))
2790 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2791 "cURL global init failed!\n");
2795 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2796 "Proxy listens on port %u\n",
2799 mhd_httpd_head = NULL;
2800 mhd_httpd_tail = NULL;
2801 total_mhd_connections = 0;
2803 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (cfg, "gns-proxy",
2807 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2808 "Specify PROXY_UNIXPATH in gns-proxy config section!\n");
2812 mhd_unix_socket = GNUNET_NETWORK_socket_create (AF_UNIX,
2816 if (NULL == mhd_unix_socket)
2818 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2819 "Unable to create unix domain socket!\n");
2823 mhd_unix_sock_addr.sun_family = AF_UNIX;
2824 strcpy (mhd_unix_sock_addr.sun_path, proxy_sockfile);
2827 mhd_unix_sock_addr.sun_path[0] = '\0';
2829 #if HAVE_SOCKADDR_IN_SIN_LEN
2830 mhd_unix_sock_addr.sun_len = (u_char) sizeof (struct sockaddr_un);
2833 len = strlen (proxy_sockfile) + sizeof(AF_UNIX);
2835 GNUNET_free (proxy_sockfile);
2837 if (GNUNET_OK != GNUNET_NETWORK_socket_bind (mhd_unix_socket,
2838 (struct sockaddr*)&mhd_unix_sock_addr,
2841 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2842 "Unable to bind unix domain socket!\n");
2846 if (GNUNET_OK != GNUNET_NETWORK_socket_listen (mhd_unix_socket,
2849 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2850 "Unable to listen on unix domain socket!\n");
2854 hd = GNUNET_malloc (sizeof (struct MhdHttpList));
2855 hd->is_ssl = GNUNET_NO;
2856 strcpy (hd->domain, "");
2857 httpd = MHD_start_daemon (MHD_USE_DEBUG, 4444, //Dummy port
2859 &create_response, hd,
2860 MHD_OPTION_LISTEN_SOCKET, GNUNET_NETWORK_get_fd (mhd_unix_socket),
2861 MHD_OPTION_CONNECTION_LIMIT, MHD_MAX_CONNECTIONS,
2862 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 16,
2863 MHD_OPTION_NOTIFY_COMPLETED,
2867 GNUNET_assert (httpd != NULL);
2869 hd->httpd_task = GNUNET_SCHEDULER_NO_TASK;
2871 GNUNET_CONTAINER_DLL_insert (mhd_httpd_head, mhd_httpd_tail, hd);
2875 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
2876 &do_shutdown, NULL);
2882 * The main function for gnunet-gns-proxy.
2884 * @param argc number of arguments from the command line
2885 * @param argv command line arguments
2886 * @return 0 ok, 1 on error
2889 main (int argc, char *const *argv)
2891 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
2893 gettext_noop ("listen on specified port"), 1,
2894 &GNUNET_GETOPT_set_string, &port},
2895 {'a', "authority", NULL,
2896 gettext_noop ("pem file to use as CA"), 1,
2897 &GNUNET_GETOPT_set_string, &cafile_opt},
2898 GNUNET_GETOPT_OPTION_END
2903 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
2907 GNUNET_log_setup ("gnunet-gns-proxy", "WARNING", NULL);
2910 GNUNET_PROGRAM_run (argc, argv, "gnunet-gns-proxy",
2911 _("GNUnet GNS proxy"),
2913 &run, NULL)) ? 0 : 1;
2914 GNUNET_free_non_null ((char*)argv);